单项选择题

23 It（）have mined last night, for the ground is wet.

A．will
B．can
C．should
D．must

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单项选择题
The number of articles published on smoking amazing.（）

A．is
B．are
C．were
D．have been
单项选择题
I don' t think he is a man（）

A．whom you can believe
B．that you can believe
C．whom you can believe in
D．what you can believe in
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